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CAS 674-82-8
4-methyleneoxetan-2-one3-Hydroxy 3-butenoic acid beta-lactone4-Methylene-2-oxetanone
登记编号：PALB-037、(II)638294-21-a、Atorvastatin-136、SUNT-001
应用背景（按来源药适应症）
乳腺癌哌柏西利收缩性心力衰竭非奈利酮舒张期心力衰竭非奈利酮心脏衰竭非奈利酮慢性肾功能不全非奈利酮糖尿病肾病非奈利酮二型糖尿病非奈利酮高脂血症阿托伐他汀锶蛛网膜下腔出血阿托伐他汀锶高血压阿托伐他汀锶胰腺神经内分泌肿瘤苹果酸舒尼替尼肾细胞癌苹果酸舒尼替尼胃肠道间质瘤苹果酸舒尼替尼骨肉瘤苹果酸舒尼替尼肉瘤苹果酸舒尼替尼淋巴瘤苹果酸舒尼替尼
来源药（使用该中间体的合成路线）
合成路线中的位置（上下游链）
按路线登记顺序排列，左→右为合成方向；高亮为当前 CAS，其余可点击跳转对应档案。
cyclopentanamine→tert-butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate→2,4-dichloropyrimidine-5-carbonitrile→1-(2,4-dichloropyrimidin-5-yl)ethanone→2,4-dichloro-5-(2-methyl-1,3-dioxolan-2-yl)pyrimidine→1-(2-chloro-4-(cyclopentylamino)pyrimidin-5-yl)ethanone→4-methyleneoxetan-2-one→N-(5-acetyl-2-chloropyrimidin-4-yl)-N-cyclopentyl-3-oxobutanamide→6-acetyl-2-chloro-8-cyclopentyl-5-methylpyrido[2,3-d]pyrimidin-7(8H)-one→2-chloro-8-cyclopentyl-5-methyl-6-(2-methyl-1,3-dioxolan-2-yl)pyrido[2,3-d]pyrimidin-7(8H)-one→tert-butyl 4-(6-((8-cyclopentyl-5-methyl-6-(2-methyl-1,3-dioxolan-2-yl)-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate
(R)-4-(Phenylmethyl)-2-oxazolidinone→3-Hydroxy 3-butenoic acid beta-lactone→1-[(4R)-4-Benzyl-2-oxo-1,3-oxazolidin-3-yl]butane-1,3-dione→2-Methoxy-4-cyanobenzaldehyde→4-[2-[(4R)-4-Benzyl-2-oxo-1,3-oxazolidine-3-carbonyl]-3-oxobut-1-en-1-yl]-3-methoxybenzonitrile→4-Amino-5-methylpyridin-2(1H)-one→4-[3-[(4R)-4-Benzyl-2-oxo-1,3-oxazolidine-3-carbonyl]-2,8-dimethyl-5-oxo-1,4,5,6-tetrahydro-1,6-naphthyridin-4-yl]-3-methoxybenzonitrile→4-[(4S)-3-[(4R)-4-Benzyl-2-oxo-1,3-oxazolidine-3-carbonyl]-2,8-dimethyl-5-oxo-1,4,5,6-tetrahydro-1,6-naphthyridin-4-yl]-3-methoxybenzonitrile→1,1,1-Triethoxyethane→4-[(4S)-3-[(4R)-4-Benzyl-2-oxo-1,3-oxazolidine-3-carbonyl]-5-ethoxy-2,8-dimethyl-1,4-dihydro-1,6-naphthyridin-4-yl]-3-methoxybenzonitrile
1,4-Epoxy-1,3-butadiene→(2E)-1,1,4,4-Tetramethoxybut-2-ene→2,2-Dimethoxyacetaldehyde→Nitrocarbol→tert-Butyl 4-bromo-3-oxobutanoate→1,1-Dimethoxy-3-nitropropan-2-ol→(1E)-3,3-Dimethoxy-1-nitroprop-1-ene→(2E)-3-Nitroprop-2-enal→Bromido(4-tert-butoxy-2,4-dioxobutyl)zinc→tert-Butyl (5S,6E)-5-hydroxy-7-nitro-3-oxohept-6-enoate→4-Methylene-2-oxetanone→tert-Butyl (3R,5S,6E)-3,5-dihydroxy-7-nitrohept-6-enoate→2-Propanone→tert-Butyl [(4R,6S)-2,2-dimethyl-6-[(E)-2-nitroethenyl]-1,3-dioxan-4-yl]acetate→(4R,6R)-6-(2-Aminoethyl)-2,2-dimethyl-1,3-Dioxane-4-acetic acid 1,1-dimethylethyl ester
4-methyleneoxetan-2-one→N1,N1-diethylethane-1,2-diamine→N-(2-(diethylamino)ethyl)-3-oxobutanamide→tert-butyl 3-oxobutanoate→tert-butyl 4-((2-(diethylamino)ethyl)carbamoyl)-3,5-dimethyl-1H-pyrrole-2-carboxylate→N-(2-(diethylamino)ethyl)-2,4-dimethyl-1H-pyrrole-3-carboxamide→N-(chloromethylene)-N-methylmethanaminium chloride→N-(2-(diethylamino)ethyl)-5-formyl-2,4-dimethyl-1H-pyrrole-3-carboxamide→5-fluoroindolin-2-one→(S)-2-hydroxysuccinic acid
本站可供应的对应中间体
同 CAS 多家在售供应横向对比；价格区间为供应方挂牌口径，实价以询价确认为准。
| 供应商 | 产品 | 价格区间 | 最小起订 | 货期 | 资质 |
|---|---|---|---|---|---|
| Unibest Nantong cGMP Site | 4-Bromo-2-methoxybenzaldehyde Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Taizhou GMP-like Site | 4-formyl-3-methoxybenzonitrile Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Qualified Partner — East China API Works | 4-AMino-5-Methylpyridin-2-ol Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Nantong cGMP Site | 2-chloro-5-methylpyridin-4-amine Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Taizhou GMP-like Site | 2-Cyanoethyl 3-oxobutanoate Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Qualified Partner — East China API Works | 2-cyanoethyl 4-(4-cyano-2-methoxyphenyl)-2,8-dimethyl-5-oxo-1,4,5,6-tetrahydro-1,6-naphthyridine-3-carboxylate Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Qualified Partner — East China API Works | 5-broMo-2-chloro-N-cyclopentylpyriMidin-4-aMine Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Nantong cGMP Site | 2-chloro-8-cyclopentyl-5-Methylpyrido[2,3-d]pyriMidin-7(8H)-one Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Taizhou GMP-like Site | 6-broMo-2-chloro-8-cyclopentyl-5-Methylpyrido[2,3-d]pyriMidin-7(8H)-one Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Qualified Partner — East China API Works | tert-Butyl 4-(6-aminopyridin-3-yl)piperazine-1-carboxylate Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Nantong cGMP Site | Tert-butyl 4-(6-nitropyridin-3-yl)piperazine-1-carboxylate Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Taizhou GMP-like Site | tert-Butyl 4-(6-((6-(1-butoxyvinyl)-8-cyclopentyl-5-methyl-7-oxo-7,8-dihydropyrido[2,3-d]pyrimidin-2-yl)amino)pyridin-3-yl)piperazine-1-carboxylate Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Qualified Partner — East China API Works | PD 0332991 HCl Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Qualified Partner — East China API Works | 5-Fluoro-2-oxindole Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
| Unibest Nantong cGMP Site | 5-Formyl-2,4-dimethyl-1H-pyrrole-3-carboxylic acid Pharmaceutical Intermediates | 询价 | 询价 | 询价 | — |
本页为中间体 CAS 注册档案：同 CAS 的多条路线登记已合并；后续供应商报价与买方需求以该 CAS 为主键撮合。